**Many of you have probably read the version that in the sizes and proportions of the Cheops pyramid, certain parameters of the Earth and secret knowledge of ancient civilizations are “encrypted”. Two or three centuries ago (including, for example, Isaac Newton), and many scientists of the XIX and XX centuries, still tried to decipher all these secrets. **

In particular, many have tried to determine the length, etc. “Sacred cubit” (“pyramidal cubit”) – measures of the length of the architects and builders of the pyramid, which supposedly was also the key to many of its secrets.

So, on the Internet you can find publications of modern popularizers, which assert, in particular, that the number obtained from dividing the length of the base of the Cheops pyramid by the length of this “pyramidal cubit” is very close to the average duration of the modern tropical year.

## An interesting way of dating the age of the pyramid

The essence of this method is as follows: **if the architects of the pyramid really encrypted in its proportions the duration of their year, then, given the slowing down of the Earth’s rotation, the age of the pyramid can be calculated. **For example, if the length of the year at the time of the construction of the pyramid was 0.01 days less than in our time, then, knowing the rate of deceleration of the Earth’s rotation (1.8 milliseconds per 100 years), you can calculate when it was.

But don’t rush to the calculations! There are “pitfalls” (which, by the way, were not taken into account in this theory).

### The Earth not only slows down its rotation, but also increases in size

“Over time, the radius of the globe, surface area, and mass increase. And the larger the Earth becomes, the faster it grows. Empirically, according to various sources, an exponential law of the increase in the radius of the globe with time has been established. Currently, the Earth’s growth rate is at its maximum, and the Earth’s radius is increasing by at least 2 centimeters per year.”VF Blinov – The Growing Earth: from planets to stars

It is also possible that tens or hundreds of thousands of years ago, the Earth’s radius increased faster than in our time (and could change even faster during the years of planetary catastrophes (like about 10 800 years ago BC).

### Riddles of the “pyramidal elbow”: Isaac Newton and Khesi-Ra

But this means that the mysterious “pyramidal elbow” during the construction of the pyramid, if it was one ten-millionth part of the Earth’s radius (as many of its researchers believed), it was not from the current radius, but from the one that was many millennia (or even tens millennia), – during the construction of the pyramid. Some scientists understood this even in the 19th century. Thus, the well-known historian and educator James Bonwick (1811-1906) wrote in 1877 in his book:

“Isaac Newton wrote a work in Latin entitled” The sacred elbow of the Jews and the elbows of some peoples in which, according to the measurements of the greatest Egyptian pyramid, made by Mr. John Greaves, the ancient elbow of Memphis is established “, where, in particular, he noted thatin the Ancient Egypt before the elbow length of 0.5 m, apparently, was preceded by another, longer length, which could be about 63.5 cm. “

And then James Bonwick writes about the book of the American scientific educator John Taylor “The Great Pyramid: Who Was It Built And For What Purpose?” (published in 1856), in particular:

“… Mr. Taylor confuses us with his assertion that thelength of the (pyramidal) elbow before the Flood was 24.9 inches (63.25 cm), and after this catastrophe it began to be equal to 25 inches (63.5 cm .)and both the elbow, according to Mr. Taylor, were sent over … Mr. Taylor suggests that the Flood had on the world of such a devastating effect – although geologists and could not find at least one tangible evidence that a flood at all took place – that the diameter of the Earth has become smaller by almost 59.55 km in comparison with the antediluvian.”

Are there ancient Egyptian depictions of people with this mysterious “pyramidal elbow”? In addition to the chief priest of Heliopolis, the legendary Imhotep, another name is associated with the construction (or with the repair) of the pyramids under Cheops, perhaps less well-known, but no less great.

Khesi-Ra, “the chief of doctors, the priest of Horus, the chief architect of the pharaoh, the Supreme chief of the ten of the South” – this is not a complete list of his regalia, known from the studies of his personal tomb, which has been preserved.

Khesi-Ra is considered by some, the main “designer” of the Great Pyramids (or, we add, the chief engineer for repair and restoration). Khesi-Ra knew the secrets of proportions, golden sections, according to which the pyramids were built.

The images on the panels-boards of Khesi-Ra (see figure below) represent a whole spectrum, a developed canon of golden sections – various measures that were used in the construction (or restoration) of the pyramids. These measures were associated not only with the golden sections, they also encrypted many of the knowledge of the priests of Upper and Lower Egypt.

But what was the length of the “pyramidal elbow” during the construction of the pyramids? So, a vicious circle? To calculate the length of the year of the construction time, encoded in the length of the pyramid base, you need to know the length of the “pyramidal cubit”, but this dina itself may depend on when the pyramid was erected!

## Let’s take the bull by the horns!

And let’s proceed from the fact that the “pyramidal elbow” as a measure of length had to fit an integer number of times at least one (most likely in the “supporting”) base of the pyramid. In addition, most likely its length did not differ much from that which was accepted by many Egyptologists since the 19th century (and still) (in the book of James Bonwick, several more names are listed, except for Taylor).

In general, the measure of length “cubit” in that century had not yet been forgotten in Europe: for example, in the physics textbook of 1831 (see the Wikipedia article “Elbow”), the lengths of the “cubit” are given in more than ten cities of Western Europe, and most of these ” cubits “has a length of 59 to 69 cm.

So, we are looking for a “pyramidal elbow” about 63 cm long, which fits an integer number of times into one of the four sides of the base of the pyramid. According to Wikipedia (article “Pyramid of Cheops”), their length is as follows: north – 230.253 m; south – 230.454 m; west – 230.357 m; east – 230.394 m. Note here also that the length of the lateral rib (initially): 230.33 m (according to calculations), according to the Wikipedia article “Pyramid of Cheops”.

It is logical to take the north side as the support one, and we will easily find that the 0.63083 m long “pyramidal elbow” fits along the length of the northern base … exactly 365 times!** **– A good start to storm this puzzle!

The next most important side of the pyramid is the eastern one. If only because the Sun and Sirius rise there (announcing the flood of the Nile). Then the average length of a year during the construction of the pyramid = 230.394 \ 0.63083 = 365.2235943.

What is the length of the tropical year in our century? In Wikipedia (in the article “Tropical Year”) we can see the following data (for 2000):

Between two March equinoxes: 365.242374 days

Between two June solstices: 365.241626 days

Between two September equinox% 365.242018 days

Between two December solstices: 365.242740 days

As you know, in Ancient Egypt, the New Year began in the summer (with the flooding of the Nile). Therefore, we must take the number in the second line (between the two June solstices), i.e. 365.241626 days.

The slowdown compared to the current average duration is 365.241626 minus 365.2235943 = 0.018031 days, or almost exactly 1558 seconds. Now remember that the rate of deceleration of the Earth’s rotation is 1.8 milliseconds per day every 100 years.

This means that every 100 years the duration of the tropical year increases by 0.0018 x 365.23 = 0.6574 seconds. Consequently, 1558 seconds run over 2369.94 centuries = 236,994 years … Well, by a round count, 237,000 years ago!

### Conclusions and discussion of the result

So the Cheops pyramid was erected 237,000 years ago?

Note, however, that the accuracy of the proposed method depends very much on the accuracy of determining the initial lengths of the pyramid’s bases: with an average base length of about 230.36 meters, an error of 0.5 cm changes the result by about 100,000 years. In most sources, according to the sizes of the pyramids, they are indicated with an accuracy of a centimeter (in the Wikipedia article “Pyramid of Cheops” – up to a millimeter).

If we assume that the initial lengths are set with an accuracy of mm, then the error of our calculations would be about plus / minus 20,000 years, but rather we should focus on an error of 0.5 cm. So, with an accuracy of determining the initial base lengths of 0, 5 cm is more correct to say that the pyramid was erected within 137 – 337 thousand years ago.** **And this is provided that the deceleration of the Earth’s rotation throughout all these hundreds of thousands of years remained equal to about 1.8 ms / day per 100 years!

However, this is an interesting result. This period in the history of the Earth ( 137 – 337 thousand years ago ) is the emergence of the Cro-Magnons (and mitochondrial Eve) in South Africa, and then (about 100,000 years ago) their exit through the territory of present-day Egypt to Eurasia. In general, there is no doubt that the Cro-Magnons reached the territory of present-day Egypt from South Africa no later than the upper limit of the time of the pyramid erection, which we determined.

If we take into account our assumption that the Cro-Magnons were in fact the first Sumerians created by their masters (Anunnaki) to help in their work (mining in South Africa) – if we also take this into account, then we can put forward and version about the purpose of the creation of these pyramids, and that it was the Anunnaki who built them then.

But what can the western and southern bases of the pyramid show? I suppose that a calculation similar to the one carried out in the article on the western base will show the time of arrival of aliens on Earth (approximately 420,000 BC), and on the southern base (the longest, 230, 454 m), the calculation will show a certain boundary in the future, which the creators of the pyramid considered important for the Earth (for humanity, or for their stay here).

Throughout its existence, the pyramid has probably been overhauled and restored several times (and maybe more often); last time in the third millennium BC, during the reign of Pharaoh Cheops.